Sonnen vs ARTsolar - solar panel manufacturer comparison
Both brands are closely matched on catalog size, efficiency and bifacial share - the choice comes down to local availability, price and specific model features.
Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.
The two companies
Sonnen is a German energy storage technology company specializing in intelligent home battery systems, most notably the sonnenBatterie — the world's first all-in-one lithium-ion home battery system commercially available. The company also develops virtual power plant (VPP) solutions and energy community platforms...
- Founded
- 2010
- Headquarters
- Wildpoldsried, Germany
- Employees
- 1000-2000
Catalogue against catalogue
An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.
What each of them builds
Written summary
ARTsolar was founded in 2010 in Durban, South Africa, and operates as the country's only 100% locally owned PV module manufacturer. Its Durban facility has been upgraded to a 340 MW assembly line through a partnership announced in June 2025 with Chinese manufacturer JA Solar, which holds Tier 1 recognition from S&P Global Commodity Insights. ARTsolar itself does not appear independently on major BloombergNEF Tier 1 bankability lists. Sonnen was also founded in 2010, in Wildpoldsried, Bavaria, Germany, and became a wholly owned subsidiary of Shell around 2019, placing it within one of the world's largest energy companies. By institutional footprint, Sonnen's Shell backing gives it a substantially stronger financial standing than ARTsolar's regionally anchored, locally owned position.
The two companies are not direct competitors and do not occupy the same product category. ARTsolar manufactures solar PV modules - currently large-format, high-efficiency panels reflecting its JA Solar technology collaboration - targeting utility-scale and commercial projects in South Africa, particularly installations tied to government renewable procurement programs. Sonnen, by contrast, does not manufacture solar panels at all. Its core offering is a family of residential lithium iron phosphate battery storage systems - the sonnenCore+, sonnenHome Battery 11, and sonnenEvo - designed for homeowners who already have a solar array and want to store excess generation. Sonnen also runs virtual power plant programs that aggregate customer batteries to provide grid services.
A buyer comparing these two brands is not choosing between rival solar panels; they are choosing between a panel manufacturer and a battery storage specialist. For South African buyers seeking locally assembled modules with domestic content credentials, ARTsolar is a regionally unique option with strong policy alignment. For buyers in Europe, the US, or Australia seeking premium residential storage with a long warranty and Shell-backed support infrastructure, Sonnen is a proven choice at the higher end of the market.
- JA Solar and ARTsolar agree to expand PV module manufacturing in South Africa
- ARTsolar in South Africa - Climate Scorecard profile
- ARTsolar and JA Solar driving South Africa's renewable energy revolution
- Expert review of Sonnen batteries - cost and performance
- Sonnen Inc. profile and installer reviews - EnergySage
Generated by Claude Sonnet · 2026-06-08
Other brand comparisons
Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.